<i>NCImilano</i>: an electron-density-based code for the study of noncovalent interactions

NCImilano , a Fortran90 code for applying the reduced density gradient (RDG) descriptor to a real-space study of noncovalent interactions, is presented. This code has been specifically designed for the X-ray charge density community, as it can deal with both gas-phase and solid-state electron densities as evaluated by popular multipolar ( XD2006 ) and Gaussian-based quantum mechanical ( Gaussian03 / 09 , CRYSTAL ) computational platforms. Moreover, it implements for the first time the possibility of plotting energy densities over RDG isosurfaces.